130306040 has 32 divisors (see below), whose sum is σ = 305938080. Its totient is φ = 49855872.

The previous prime is 130306031. The next prime is 130306061. The reversal of 130306040 is 40603031.

It is a super-3 number, since 3×130306040³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69899 + ... + 71738.

It is an arithmetic number, because the mean of its divisors is an integer number (9560565).

Almost surely, 2^130306040 is an apocalyptic number.

130306040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130306040 is an abundant number, since it is smaller than the sum of its proper divisors (175632040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130306040 is a wasteful number, since it uses less digits than its factorization.

130306040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141671 (or 141667 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 130306040 is about 11415.1671034637. The cubic root of 130306040 is about 506.9769125592.

Adding to 130306040 its reverse (40603031), we get a palindrome (170909071).

The spelling of 130306040 in words is "one hundred thirty million, three hundred six thousand, forty".